<template>
<div class="app-container" id="content">
  <mt-header fixed title="vue-webpack">
  	<span slot="left" @click="goBack()" v-show="flag">
  		<mt-button icon="back">返回</mt-button>
  	</span>
  </mt-header>
<transition>
  <router-view></router-view>
</transition>

<nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-self" href="#tabbar" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-self" href="#tabbar-with-chat" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-self" href="#tabbar-with-contact" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">
					{{ this.$store.getters.getAllCount }}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-self" href="#tabbar-with-map" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
</nav>
</div>
</template>

<script>
	export default {
		data:function  () {
			return {
				flag:false
			}
		},		
		methods:{
			//返回按钮 路由的实现
			goBack(){
				this.$router.go(-1)
			},
			//页面刷新时 返回按钮的初始化
			backButtonInit(){
				if(this.$route.path != "/home"){
					this.flag = true;
				}else{
					this.flag = false;
				}
			}
		},
		watch:{
			//不是首页就显示返回按钮  是首页就隐藏
			"$route.path":function  (newValue) {
				if(newValue != "/home"){
					this.flag = true;
				}else{
					this.flag = false;
				}
			}
		},
		created(){
			this.backButtonInit()
		}
	}
</script>

<style lang="scss" scoped>
	.app-container {
		padding-top: 40px;
		padding-bottom: 50px;
		background-color: #fff!important;
	}

	.v-enter {
		opacity: 0;
		transform:translateX(100%);
		position: absolute;
	}
	.v-leave-to {
		opacity: 0;
		transform:translateX(-100%);
		position: absolute;
	}

	.v-enter-active,
	.v-leave-active {
		transition:all 1s ease;
	}

	.app-container {
		/*y轴方向还是要有scroll的*/
		overflow-x: hidden; 
	}

	.mui-bar-tab .mui-tab-item-self.mui-active {
    color: #007aff;
	}
	.mui-bar-tab .mui-tab-item-self {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
	}
	.mui-bar-tab .mui-tab-item-self .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
	}
	.mui-bar-tab .mui-tab-item-self .mui-icon ~ .mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
	}


</style>